William johnston



(No Model.)

W. JOHNSTON.

PUMP.

WITNESSES N, ruins. Pmvmhegmphar, wmmngwn. D. a

UNITED STATES PATENT OFFICE.

WILLIAM JOHNSTON, OF ESSEX, IOWA.

PUMP.

SPECIFICATION forming part of Lettera Patent No. 329,910, dated November10I 1885.

Application filed September 8, 1885.

To all whom it may concern:

Be it known that I, WILLIAM JOHNSTON, a citizen of the United States,residing at Essex, in the county of Page and State of Iowa, haveinvented a new and useful Improvement in Pumps, of which the followingis a specification, reference being had to the accompanying drawings.

My invention relates to an improvement in pumps; and it consists in thepeculiar construction and combination of devices that will be more fullyset forth hereinafter, and particularly pointed out in the claims.

In the drawings, Figure 1 is a vertical sectional view of a pumpembodying my invention. Fig. v2 is a transverse sectional view of thesame, taken on the line x :v of Fig. l.

A represents the pump-cylinder, which is designed to be supported uponany, suitable bearing below the ored in the bottom of a well. Thiscylinder is closed at its ends, and is provided at its upper end with avertical extension, B, of reduced diameter, and which is provided withelongated vertical slots O, to permit ingess of the water to thecylinder.

D represents a tube, which is open at its lower end, and provided at itsupper end with a discharge-spout, D. To the lower end of the tube isscrewed a cap, E, to the lower end of which is coupled the reduced upperside of a hollow open piston, F, that works vertically in the cylinderwhen the tube D is vertically reciprocated. rlhe lower' portion of thepiston forms a cage for a valve, G, which is a circular metallic diskhaving a circular central opening, g, and a leather or other suitablepacking, g', on its upper side. rIhis valve plays vertically in thelower portion of the piston, its motion being limited by the shoulderfand the pins or studs f. In the horizontal shouldered portion of thepiston are ports f 2, communicating with the cylinder. The reduced upperportion of the piston is closed at its upper side, as at f3, and hasports f4, that communicate with the lower end of the tube VD. A valve,H, similar to the valve G, is placed on the upper side of the piston andworks vertically in the cap E, which forms a cage for said valve. Theupper end of the tube is connected to a handle,

level of the water, or anch-v Serial No. 176,507. (No model.)

I, which latter is fulcrumed, as at K, and has a weight, L, on its shortend sufficiently heavy to counterbalance the piston, tube, and column ofwater in the latter. I;

The operation of myinvention is as follows: The piston is at its initialposition at the upper end of the cylinder, as shown in solid lines inFig. 1, with the ports f2 open and the ports f4 closed. Water isadmitted through 6 the slots C and ports f2 into the cylinder, so thatthe latter is constantly filled. When the piston is moved downward, bydepressing the outer end of the handle-lever the valve G rises andcloses the ports f2, and a portion of 6 the water in the cylinder passesthrough the opening in said valve and through the ports f, raising thevalve H and passing through said valve into the tube D, as indicated indotted lines in Fig. l. the piston the cylinder is again filled, to beagain forced into the tube D and discharged through the spout on theensuing downstroke.

The weight on the lever raises the piston, and in working the pump theonly exertion 7 necessary is to depress the outer end of the lever, thusrendering the operation of the pump extremely easy.

Having thus described my invention, I claim- 8 The combination of thecylinder having the reduced extension B at its upper end, andinlet-openings C in said extension, the hollow tube D, the cap E,secured to the lower end'of said tube, the hollow open piston F, 8having the reduced upper end coupled to the cap E, the ports f2,communicating with the cylinder, and the ports f 4, communicating withthe lower end of the tube, the valve G in the lower part of the piston,having the central opening, g, and adapted to rise when the piston islowered and close the ports f2, and the valve H in the cap E, adapted torise when the piston is lowered and open the ports f, substantially asdescribed.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in presence of two witnesses. v

WILLIAM JOHNSTON.

Witnesses:

G. B. JENNINGs, J. A. OsTERnoLM.

On the upstroke of 7o

